you would call somebody a YELLOW CHAMELEON  beats my wildest imagination.
We all know that 'yellow ' is a color figuratively used to qualify cowardice, while a chameleon is an animal which imitates or assumes colors of things around it.
Is it therefore not an overkill calling someone a 'cowardly chameleon' ?
But that's what the man was popularly called - Yellow Chameleon - derisively. 
I was new in town and I became curious to know why.
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